This article is about the Hanseatic city. For other meanings, see Lübeck (disambiguation).

The Hanseatic city of Lübeck( Audio-Datei / Hörbeispiellisten? /i) (Low German: Lübęk, Lübeek; adjective: lübsch, lübisch, at the latest since the 19th century also lübeckisch), Latin Lubeca, is a district-free large city in northern Germany and southeastern Schleswig-Holstein on the Bay of Lübeck, a sea inlet of the Baltic Sea. With a population of more than 200,000, the university city of Lübeck is the second largest city in Schleswig-Holstein after the state capital Kiel, the largest city in terms of area at around 214 km², and one of the state's four major centres. Lübeck is a member of the cooperation network Metropolregion Hamburg.

The Hanseatic city was founded in 1143 on its present site, received its city charter in 1160 and is also known as the "City of the Seven Towers" and the "Gateway to the North". It is regarded as the "Queen" and "Mother of the Hanseatic League", a trade association which, from the 12th century until modern times, ensured great prosperity in Lübeck and other member cities through free trade and peaceful cooperation. St. Marien zu Lübeck is considered one of the main works and the "mother church" of the Brick Gothic style, which spread from the Wendish League of Towns throughout northern Europe. The preserved areas of Lübeck's old town with over a thousand cultural monuments have been part of the UNESCO World Heritage since 1987. Lübeck had a tradition as a Free Imperial City in the Holy Roman Empire and as a Free City or City State since 1226; it ended in 1937 with the Greater Hamburg Act.